Bookholder



Jan. 2, 1923.

C. S. BOOTH. BooK HOLDER. FILED MAYI 23, 1921 2 SHEETS-SHEET 2 zvenr:

inist rarest CHRISTOPHER S. SOUTH, OF C Alv? POINT, ILLINOIS. I

BOOKHOLDER.

Application filed May S23,

To @ZZ whom t may concern:

Be it known that l, CHRISTOPHER t5. Boori-r, citizen or the UnitedStates, residing at Camp Point, in the county, of Adams and State ofillinois, have invented a oertain new and useful improvement inBookholders, oi'l which the following is a ull, clear, concise, andexact description.

My invention relates to stiff covered books and resides in thecombination thereof with improved holders therefor.

rilhe invention has tor one or its objects the provision of meanswhereby opening or closing movements imparted to either book cover willbe communicated to the other book cover so that both book covers willhave substantially equal and simultaneous opening and closing movements.

The invention has for another of its objects the provision ot ,meanswhereby the weight oi the book will take part in closing the saine.

The invention further includes' an improved mounting for each ot thebook covers whereby the opening and closing movements thereo'tl are madesmooth. A y

rlhe invention in all of its characteristics will be fully explained byreference t0 the accompanying drawings in which Fig.. l is a side viewoi the book and the supporting means therefor, v the book being shown inclosed position; ld`ig- 2 is a plan view of the bookv as it appears inFig. 1; Fig. '3 is a plan view, partially in section, illustrating thepreferred means for constraining both book covers to have substantiallyequal and simultaneous opening and closing movements; `Fig. l is asectional view on line Ll-l of lcig. l; Fig. 5 is a plan view of thebook, open; Fig. 6 is a somewhat diagrammatic view of parts of the booksupporting means; and Fig. Z is another somewhat diagrammatic view ofparts appearing in Fig. 6.

Like parts are indicated by similar characters of reference throughoutthe dierent figures.

As illustrated, the book 1 has sti covers 2, the book having a tlexibleback 3 that joins the covers and permits the back edges of the coversgradually to become further apart as the book opens. rlhe book thusconstructed is shown as having its covers 2 disposed within the stiffsupports 4 that have ledges 5 to engage the bottom edges 1921. SerialN0. 471,953.

of the covers?, the book being held in an inclined position. ln order toassure the permanent relation betweenthe stitl covers 2 and their stisupports 4C said covers and l supports are bolted or otherwise rigidlyse# cured together as indicated at 6. The supports l thus, virtually,become parts of the book covers, wherefore the invention is not to belimited to a construction employing `both elements Qand ll. rl`he bookis supported upon rods having lower' upright portions 7 and angularvportions 8, the stift' covers ot the book being directly connected.with said angular rod portions bymeans of straps 9 which are boltedthereto and which are curled at ltheir lower lends into bearings sleeves10 which surround and turn upon the angular rod portions '8. The uprightrod portions/f(r are journaled in the frame 11 lwhereby the yrods mayturn upon the vertical axes of said upright portions 7. The angular rodportions 8 are symmetrically related and are oblique to thevnormal planeof the book,

the plane occupiedby the book when-closed. o

The two angular rod portions 8 converge toward the bottom 'of thebook,on which account the rod portions 8 are provided with washers 12 thatengage the lower ends ort the sloping sleeve bearings 10. Upright rodportions' 74 are between the middle and bottom of the book whereby theweight of the book aids in closing the book, it being thereforeunnecessary to employ a :book closing spring. Y o

v The axes lof the upright and angular lrod portions 7 and 8 intersectin a plane that is below the back edges of the covers whereby these backedges may spread apart as the book is being opened.

A rigid connection, preferably in the form of a strap 13, is inhingedconnection with the leaves 14, carried by the book supports Ll, bymeans of pintles 15. rlhese pintles are parallel and below the backedges ot the book covers and the axes thereofl substantially intersectthe aires of the rod por tions 7 and 8 where these latter axesintersect. rlhe sloping axes of these pintles are therefore thesubstantially relatively iXed axes upon which the book covers turn asthe book is opened and closed. rl`he places of union of the flexiblebook back 3 with the book covers 2 is at the back `edges of these bookcovers and as these back edges are `above the plane ythat contains theaxes of the pintles they may spread apart as the book is opened, theseback edges turning upon the a-Xes of the pintles and about the points ofintersection of these axes and the axes of the sloping rod portions 7and It is preferred to have some limiting means to define the extent towhich the book may be opened and to this end I have bolted straps 16upon the sides of the book supports, these straps having their lowerends outwardly ared and so positioned that they will engage the uprightrod portions I when the book has been opened to the predeterminedentent, said upright rod portions preventing further opening movement ofthe book. y

In order that the opening and closing movements of both book covers maybe made substantially equal and simultaneous, I employ motiontransmitting means operating upon and operated by either cover toaccomplish this result.

In the preferred embodiment of the invention links 17, 18 arerespectively rigidly secured to the' upiightrod portion 7, one oftheselinks carrying a pin 19 and the other being formed with ai slot 20receiving said pin whereby the adjacent ends of the links are in pin andslot connection. The arrangement is such that when either link is turnedit forces` opposite turning movement of theother link of the same degreeso that when either booksupporting rod is turned in opening or closingthe book the other rod is constrained to have similar turningx movementin an opposite direction so that both book covers are con-y strained tosubstantially equal and simultaneous opening and closing movements.

While I have herein shown and particularly described the preferredembodiment' of my `invention I do not wish to be limited to the precisedetails of construction shown as changes may readily be made withoutdeparting from the spirit of my invention, but having thus described myinvention I upon their axes and kangular portions upon l which saidcovers are mounted to turn, these angular portions being symmetricallyrelated and oblique to the normal plane of lthe book; and two linksindividual to said rods and having adjacent ends which arein pin andslotl connection and their other ends in Xed connection with the uprightportionsr of saidrods to which the links are individual. i

2. The combination with .a book having l stilf covers; of two rodshaving lower upright portions which are mounted to turn upon their axesand angular portions upon which said covers are mounted to turn, theseangular portions being symmetrically. related and oblique to the normalplane of the book, the upright portions of said rods being between themiddle and bottom of the book, whereby the weight of the book aids inclosing the book; and two links individual to said rods and havingadjacent ends which are in pin and slot connection and their other endsin fixed connection. with the upright portions of said rods to which thelinks are individual. o

3. The combination with a book having stiff covers; of two rods havinglower upright portions which are mounted to turn upon their axes andangular portions upon which said covers are `mounted to turn, theseangular portions being symmetrically related and oblique tothe normalplane of the book, the upright portions of saidvrods being between themiddle and bottom of the book, whereby the weight of the book aids inclosing the book.

In witness whereof, Ihereunto subscribe my namethis 11th day of May A.D. 1921.

. oiinis'roriinn s.- Boofrii.

